Wire-terminal.



B. L. LAWTON.

WIRE TERMINAL.

APPLICATION FILED FEB. 25, 1916.

Patented Mar. 6, 1917.

UNITED STATES PATENT OFFICE.

BURTON L. LAWTON, 0F MERIDEN, CONNECTICUT, ASSIGNOR TO CONNECTICUT TELE-PHONE & ELECTRIC COMPANY, INC., OF MERIDEN, CONNECTICUT, A CORPORATIONOE CONNECTICUT.

WIRE-TERMINAL.

Specification of Letters Patent.

Application filed February 25, 1916. Serial No. 80,344.

To all whom it may concern:

Be it known that I BURToN'L. LAWTON, a citizen of the United States ofAmerica, residing at Meriden, New Haven county, Connecticut, haveinvented a new and useful VVire-Terminal, of which the following is aspecification.

My present invention has reference to terminals for the ends of wiresand the objects of the invention are to provide an improved andsimplified form of terminal which can be inexpensively manufactured andwhich can be readily applied to the wire ends.

In the accomplishment of these objects I employ a tubular handle intothe open end of which the end of a wire is inserted and mount on theopposite end of said handle a terminal clip which is preferably heldagainst rotation on the end of the handle by seating it in an angularrecess in said handle end and which is secured firmly in position bymeans of a tubular rivet passed through from the interior of the tubularhandle and headed over at its opposite end. This rivet provides acoupling between the tubular handle and the terminal clip and also apassage through which a securing screw may be passed into the end of thewire housed in the handle.

Other features of the invention will appear as the specificationproceeds, reference being had to the accompanying drawing forming a partthereof and wherein I have illustrated the invention embodied in apractical and preferred form.

In said drawing: I

Figure 1 is an enlarged sectional view showing the terminal of myinvention applied to the end of a stranded conductor such as used onengine ignition circuits.

Fig. 2 is a perspective view illustrating the several parts in separatedrelation.

Considering the drawing now more in detail, 7 designates the so-called,handle member which is tubular in form and open at one end 8 to receivethe end of the insulated wire 9. This handle forms a housing protectingthe end of the cable and serves also as a support for the terminal clip.

The opposite end of the handle is formed with an opening 10 therethroughand is further provided with an angular seat or recess 11 in the outerend thereof.

The form of the terminal clip may vary to suit different requirements.In the pres.

ent instance it is illustrated as having a pair of spring arms 12adapted to embrace the head of a spark-plug or other device, connectedby an angular base 13 adapted to fit into the angular seat 11 in the endof the handle, the angular seat and this angular base thus providingcooperating shoulders which hold the terminal clip against rotationonthe end of thehandle.

The terminal member or clip is secured in its seat on the end of thehandle by means of a tubular rivet 15 extending through the passage 10in the endof the handle through an opening 16 in the'base of the clipand flanged over at its opposite ends as indicated at 17 and 18.. Theflange 18 may be formed on the rivet before its introduction in thepassage 10, the usual method of assemblage being to introduce thistubular headed rivet into the passage 10 from the inside of the hollowhandle and then to flange the outer exposed end of the rivet over thebase of the terminal seated in the recess. By these means the terminalclip is rigidly and firmly secured to the handle member and the seatingof the clip in a recess in the end of the handle braces the clip againstturning or twisting strains which might otherwise tend to break it awayfrom the handle.

My improved terminal clip is usually secured in position on the wire endby forcing the open end of the handle over the end of the wire and thenintroducing a screw 20 or similar fastening means into the passageprovided by the tubular rivet and into the end of. the wire, the wirebeing usually stranded as indicated at 21. This screw fastening as itenters in the stranded conductor makes its own thread and by spreadingthe conductor and the insulation surrounding it serves to all the morefirmly secure the terminal in position on the end of the wire. Thetubular rivet is made relatively long so as to provide a long bearingfor the screw and thus insure its proper engagement in the center of theconductor.

The invention is relatively simple and inexpensive and constitutes apractical and strong terminal construction for wire ends.

What I claim is I An electric terminal member comprlsing a tubularhandle portion having a deep opening at one: end to receive the end ofan insulated stranded wire, said handle being provided with a relativelyshallow recess in with said central passage, and a tubular rivetextending through both passages and headed at each end to therebyrigidly and i permanently secure said base in said angular recess.

BURTON L. LAWTON.

